In our daily, we all know that the quality of air is vital to our health, this product can detect CO2, temperature and humidity for you, you can use it in your home, office hotel or wherever you want. come on and try it. You will not be disappointed with it. Features: Large Display Screen: This CO2 monitor with a large display screen for you to see the detecting data more clearly, you can get the results easily. Portable Size: This monitor is small in size and you can use it on your desk without taking up too much desk space, also easy for you to carry. Screen Brightness Adjustable: The brightness of the screen can be adjusted according to your needs, you can easy reading even in dark environments. Wide Applications: This CO2 monitor can be used in your home, office, destop, hotel and other places. Built-in Lithium Battery: This CO2 monitor using built-in large capacity to supplys power, you can recharge it in time. Specifications: Material: ABS Color: black Temperature measuring ranges: 0~50 Error: 1 Humidity measuring ranges: 25%~95% Error: 5% CO2 measurement ranges: 400ppm-5000ppm Battery: 1 * lithium battery, 2000mAh (included) Item weight: 160g / 5.6ounce Package size: 114 * 94 * 62mm / 4.5 * 3.7 * 2.4in Package weight: 195g / 6.9ounce Packing list: 1 * CO2 Monitor